Simple Atwood Machine, include Apparatus and 2 pulleys connected by a rod, 1.75inch plastic pulleys connected to a 3inch rod, Overall length is 8.25inch, Two pulleys are connected by a metal rod.
Air core solenoid, coils wound on a plastic tube with approximately 575 turns of copper wire, can carry a current of 5A continuously or 10A intermittently.
Mystery Density Activity Set with wooden holder, which allows for efficient storage and easy access, Set of 12 bars of different length but the same diameter